Roots were given to me, I planted them. They grew very tall 10ft and higher, it gets tiny clusters of seed type pods and blooms orange/yellow flowers. They bloom then fall off, more sprouts come up from the dirt all the time. Like the roots maybe connected, I have no idea what it is. I love it, and the winter here it doesn't care for. But it comes back every year with more. I want to know what it is, and how to take care of it and make more?

Long green stalks,flowers at top,orange/yellow flowers tall 10ft
its the big leaf 0ne thats the tallest in this picture. sorry it is sideways. you can see the big green leaves, almost see a little of the flowers in between its leaves. it is about 10 ft here, it is taller now.